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Roadside Geology of Maryland, Delaware, and Washington, D.C.

Roadside Geology of Maryland, Delaware, and Washington, D.C.


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From the sandstone ridges and shale valleys of western Maryland to the sand dunes and tidal estuaries on Delaware’s coast, the geologic features of the Mid-Atlantic region include a diverse array of rocks and landforms assembled during more than 1 billion years of geologic history.

The book’s introduction presents an overview of the geologic history of Maryland, Delaware, and Washington, D.C., and 35 road guides discuss the landforms and rocks visible from a car window, along bike paths, and at nearby waysides and parks, including Chesapeake & Ohio Canal National Historic Park, Assateague Island National Seashore, Rock Creek Park, and Cape Henlopen State Park. With this book as your guide, learn why sea level is rising faster in Chesapeake Bay than in other coastal areas of the world, find out how the sixth largest impact crater on Earth helped shape Chesapeake Bay, and discover what moved the rocks at Devils Racecourse in Catoctin Mountain Park.

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